The men's Under Armor HG RUSH FITTED SS PRINTED short sleeve compression T-shirt comes with innovative Rush technology which uses mineral enriched fibers to recycle energy and return it back to you. The side mesh panels are pleasant to the touch, increase breathability and help to effectively expel heat. With anti-odour technology that prevents the growth of odor causing bacteria, you stay fresh longer. This technology, the raglan sleeve design and extreme mobility all ensure maximum comfort.